The problem with this ad is that its leaves too much to be assumed / imagine.
The biggest polluters in the world are the ones who claim to be the most eco friendly. Maybe that was the thought when they came up with the concept.

Funny concept for a strong and serious problem. Can we laugh with pollution, that's the question. It makes me laugh when I saw this campaign, so it's a good campaign for me and a fucking good art. Well done art director ! You desserve your lion this year !